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Assassination of Archduck Ferdinand
After Archduke Ferdinand was assassianted, Austria-Hungary declared war on Serbia and Europe rapidly descended into chaos. -
The Schlieffen PLan
The operational plan for an attack on France. -
Trench Warfare Begins
Trench Warfare is a type of land warfare using occupied fighting lines consisting largely of trenches. -
Christmas Truce along the Western Front
A symbolic moment of peace in a violent war. -
Germans Introduce Poison Gas
German forces shocked Allied soldiers by firing 150 tons of deadly chlorine gas -
Sinking of Lustania
The Lustania made her voyage only for the voyage to be cut short by a Geramn U-boat, as it was torpedoed. -
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Battle of Verdun
One of the largest battles fought on the western front between the German and French armies. -
The Sussex pledge
The German government responded with the so-called Sussex pledge. They agreed to give adequate warning before sinking merchant and passenger ships and to provide for the safety of passengers and crew. -
Zimmerman Telegram
The message came in the form of a coded telegram dispatched by the Foreign Secretary of the German Empire -
President Wilson asks for a declaration of war.
President Woodrow Wilson asked Congress to declare war against Germany. -
General John J. Pershing became AEF leader
As America entered World War I, General John J. Pershing was appointed commander in chief of the American Expeditionary Force to assist the Allied powers against German forces. -
Committee on public information formed
An agency headed by progressive journalist George Creel during World War I. -
Selective service act became law
U.S Congress passes the Selective Service Act giving the U.S. president the power to draft soldiers. -
World War ! ended
Germany and the Allied Nations (including Britain, France, Italy and Russia) signed the Treaty of Versailles, formally ending the war. -
Battle of Argonna Forest
A major part of the final Allied offensive of World War I that stretched along the entire Western Front.
